Home / 1,539.20-2,125.11-1,184.49

Finding the Fourth Proportional to 1,539.20, 2,125.11 and 1,184.49

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Solution

The fourth proportional to 1,539.20, 2,125.11 and 1,184.49 is: 1,635.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,539.20 : 2,125.11 = 1,184.49 : x
  2. Step 2: Convert to fraction form
    1,539.20/2,125.11 = 1,184.49/x
  3. Step 3: Cross multiply
    1,539.20x = 2,125.11 × 1,184.49
  4. Step 4: Simplify right side
    1,539.20x = 2,517,171.54
  5. Step 5: Solve for x
    x = 2,517,171.54/1,539.20
  6. Step 6: Final answer
    x = 1,635.38

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Find fourth proportional to 1,540.20, 2,126.49 and 1,185.49
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.